Hey man,
Don't give up ! It's okay to feel a bit bad, i've made a lot of projects during my school years (hardest projects I've ever had in my life).
The first day, you're happy because you know you're gonna do your best, you've got plenty of ideas.
Then the second day is coming, you start to have some troubles, to realize that some things are not possible.
But that's normal, maybe lower your expectations, but never give up ! :)
You're here because you wanna be better at making video games - to end this week with a game you've made, etc. Don't give up ! :) \0/